高效降解盐酸四环素的CdS/BiOCl复合光催化剂的制备及性能

doi:10.11896/cldb.22060180

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Abstract In this work, BiOCl ultrathin nanosheets were prepared by hydrothermal method, and then CdS/BiOCl composite photocatalysts were successfully synthesized by deposition method. The results of XRD proved that the introduction of CdS did not change the crystal structure of BiOCl. The XPS showed that the CdS/BiOCl composite photocatalyst was successfully prepared. SEM and HRTEM images demonstrated that CdS was deposited on BiOCl nanosheets. The fluorescence spectrum (PL) indicated that the separation of photo-induced electron-hole based on the composite photocatalyst was significantly improved compared to that of the pure BiOCl, and with the increase of Cd(Ac)₂·2H₂O addition amount, the fluorescence spectrum intensity first weakened and then enhanced. According to the XPS valence band spectra and UV-Vis-DRS spectra, the positions of the valence band and conduction band of the composite photocatalyst were calculated. Taking tetracycline hydrochloride (TC) as the target pollutant, photocatalysis activity of these photocatalysts had been evaluated. Results showed that the CdS/BiOCl composite photocatalyst possessed higher photocatalytic activity compared with pure BiOCl. The removed ratio reached up to 70.6% based on the optimized CdS/BiOCl (CB-8) photocatalytic after 5 min irradiation, which was 16.2 times to the pure BiOCl. Finally, the possible reaction mechanism of CdS/BiOCl photocatalyst was speculated according to the results of XPS valence band spectra and trapping experiments.

Key words： photocatalysis BiOCl CdS tetracycline hydrochloride heterojunction

Published: 25 March 2024 Online: 2024-04-07

CLC number:	X703.1
	O644

Fund:Tianjin Key Science and Technology Program Foundation (19PTZWHZ00030).

Corresponding Authors: ^*changna@tiangong.edu.cn

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	WANG Haitao
	SHI Baoxu
	ZHAO Xiaoxu
	CHANG Na

Cite this article:

WANG Haitao,SHI Baoxu,ZHAO Xiaoxu, et al. Preparation and Property of CdS/BiOCl Materials: a High Efficiency Photocatalyst for Degradation of Tetracycline Hydrochloride[J]. Materials Reports, 2024, 38(6): 22060180-8.

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https://www.mater-rep.com/EN/10.11896/cldb.22060180 OR https://www.mater-rep.com/EN/Y2024/V38/I6/22060180

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